user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Backdoor:Linux/Mirai.BI!MTB
Backdoor:Linux/Mirai.BI!MTB - Windows Defender threat signature analysis

Backdoor:Linux/Mirai.BI!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.BI!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:BI
Specific signature variant within the malware family
Suffix:!MTB
Detected via machine learning and behavioral analysis
Detection Method:Behavioral
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: Backdoor - Provides unauthorized remote access for Linux platform, family Mirai

Summary:

This is a concrete detection of a Backdoor:Linux/Mirai.BI variant, leveraging behavioral analysis to confirm its presence. This Mirai botnet aims to infect Linux-based systems, particularly IoT devices, gaining remote control to establish a botnet, potentially eliminating competing malware, and launching further attacks like DDoS.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_BI_2147818744_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.BI!MTB"
        threat_id = "2147818744"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Mirai"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "3"
        strings_accuracy = "High"
    strings:
        $x_1_1 = "w5q6he3dbrsgmclkiu4to18npavj702f" ascii //weight: 1
        $x_1_2 = "killallbots" ascii //weight: 1
        $x_1_3 = "npxxoudiffeeggaacscs" ascii //weight: 1
        $x_1_4 = "/dev/FTWDT101_watchdog" ascii //weight: 1
        $x_1_5 = "ajwligf" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (3 of ($x*))
}
Known malware which is associated with this threat:
34ce4e93e9cf76541a5418c3abd328f2c372ab719d0c3254d65dc46d2477f5d6
21/01/2026
→VirusTotal↓Download Sample
70af461831dd64f40671be771cea6c363a1f771c9783ffd6c8a87b4283112be9
21/01/2026
→VirusTotal↓Download Sample
Filename: i686
425f95a70cecc3da00b8b6be322fed919c170a0bddd8f9510e757b179fb2009f
21/01/2026
→VirusTotal↓Download Sample
Filename: m68k
b737664012c4ff04ff9017fb7b0067d87dc2a5f3f6b736bdc720eb72db6df64f
21/01/2026
→VirusTotal↓Download Sample
Filename: mipsel
6aa82509279a64cb77127c77011ed7a8a7ceeaa4aa4f32923948c4c9f95a9927
21/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected Linux system to prevent further compromise. Perform a full system scan with updated security software to remove the Mirai malware and related artifacts. Patch all identified vulnerabilities, enforce strong, unique passwords, and update firmware on all network-connected devices, especially IoT, to prevent reinfection.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 24/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊